骨瘤

An osteoblastoma is just a big osteoid osteoma in the vertebra.

骨细胞瘤骨上的大骨样骨瘤。

Single cancellous osteomas, unlike exostosis, are a relatively rare lesion in the external auditory canal.

单一性疏松骨瘤，不像外生骨疣，一个外耳较少见的病灶。